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Femtosecond structural dynamics drives the trans/cis isomerization in photoactive yellow protein

by Weierstall, Uwe , White, Thomas A. , James, Daniel , Fromme, Petra , Schwander, Peter , Metz, Markus , Groenhof, Gerrit , Brayshaw, Jennifer , van Thor, Jasper J. , Hutchison, Christopher D. M. , Aquila, Andy , Morozov, Dmitry , Gati, Cornelius , Schmidt, Marius , Henning, Robert , Spence, John C. H. , Robinson, Josef S. , Šrajer, Vukica , Moffat, Keith , Liang, Mengning , Xavier, Paulraj Lourdu , Basu, Shibom , Koglin, Jason E. , Koralek, Jake , Conrad, Chelsie , Coe, Jesse D. , Zhao, Yun , Chapman, Henry N. , Ketawala, Gihan , Zatsepin, Nadia A. , Yefanov, Oleksandr , Subramanian, Ganesh , Ourmazd, Abbas , Kupitz, Christopher , Frank, Matthias , Tenboer, Jason , Barty, Anton , Oberthuer, Dominik , Pande, Kanupriya , Boutet, Sébastien , DePonte, Daniel P. , Fromme, Raimund , Grant, Thomas D. , Roy-Chowdhury, Shatabdi

in Absorption / Bacterial Proteins - chemistry / Bacterial Proteins - radiation effects / Crystallography / Isomerism / Light / Light sources / Photochemical Processes / Photochemistry / Photons / Photoreceptors, Microbial - chemistry / Photoreceptors, Microbial - radiation effects / Protein Conformation - radiation effects / Proteins / Time Factors

2016

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Femtosecond structural dynamics drives the trans/cis isomerization in photoactive yellow protein

2016

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Femtosecond structural dynamics drives the trans/cis isomerization in photoactive yellow protein

2016

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Journal Article

Femtosecond structural dynamics drives the trans/cis isomerization in photoactive yellow protein

Weierstall, Uwe,

White, Thomas A.,

James, Daniel,

Fromme, Petra,

Schwander, Peter,

Metz, Markus,

Groenhof, Gerrit,

Brayshaw, Jennifer,

van Thor, Jasper J.,

Hutchison, Christopher D. M.,

Aquila, Andy,

Morozov, Dmitry,

Gati, Cornelius,

Schmidt, Marius,

Henning, Robert,

Spence, John C. H.,

Robinson, Josef S.,

Šrajer, Vukica,

Moffat, Keith,

Liang, Mengning,

Xavier, Paulraj Lourdu,

Basu, Shibom,

Koglin, Jason E.,

Koralek, Jake,

Conrad, Chelsie,

Coe, Jesse D.,

Zhao, Yun,

Chapman, Henry N.,

Ketawala, Gihan,

Zatsepin, Nadia A.,

Yefanov, Oleksandr,

Subramanian, Ganesh,

Ourmazd, Abbas,

Kupitz, Christopher,

Frank, Matthias,

Tenboer, Jason,

Barty, Anton,

Oberthuer, Dominik,

Pande, Kanupriya,

Boutet, Sébastien,

DePonte, Daniel P.,

Fromme, Raimund,

Grant, Thomas D.,

Roy-Chowdhury, Shatabdi

2016

Overview

A variety of organisms have evolved mechanisms to detect and respond to light, in which the response is mediated by protein structural changes after photon absorption. The initial step is often the photoisomerization of a conjugated chromophore. Isomerization occurs on ultrafast time scales and is substantially influenced by the chromophore environment. Here we identify structural changes associated with the earliest steps in the trans-to-cis isomerization of the chromophore in photoactive yellow protein. Femtosecond hard x-ray pulses emitted by the Linac Coherent Light Source were used to conduct time-resolved serial femtosecond crystallography on photoactive yellow protein microcrystals over a time range from 100 femtoseconds to 3 picoseconds to determine the structural dynamics of the photoisomerization reaction.

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Publisher

American Association for the Advancement of Science,The American Association for the Advancement of Science

Subject

Absorption

/ Bacterial Proteins - chemistry

/ Bacterial Proteins - radiation effects

/ Crystallography

/ Isomerism

/ Light

/ Light sources